2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/131970The Einstein relation connecting the diffusion constant and the mobility is violated beyond the linear response regime. For a colloidal particle driven along a periodic potential imposed by laser traps, we test the recent theoretical generalization of the Einstein relation to the non-equilibrium regime which involves an integral over measurable velocity correlation functions.Statistical MechanicsSoft Condensed Mattertext